The Effects of Heat and Stress on the Interface of Glass-Reinforced Polyimide Composites 740992
With the development of the addition-type polyimide resins, a need arose for a coupling agent that would improve the performance of the fiber-resin interface under thermal stress. Research work was carried out to develop such a material and resulted in a new coupling agent for use at high temperatures. The test data generated from glass fiber reinforced composites using this new coupling agent, and the study of the interface using the scanning electron microscope, demonstrate an improvement in the cohesive and interfacial shear of the glass fiber-resin matrix. This development has provided the designer with a material that retains its structural integrity under extreme thermal conditions.